WO2005085722A1 - Control method for a movable air conditioner extracting condensed water - Google Patents

Abstract

The present invention relates to a control method for a movable air conditioner extracting condensed water, said air conditioner mainly comprises a refrigeration System, a shower system and a fan system. The refrigeration System comprises a compressor, an evaporator, a throttle mechanism and a condenser, which are connected in turn. The shower system comprises a water tank, a pump which pumps the water in said water tank to the condenser, and a water level regulator that controls the pump's running; the fan system comprises a fan, a motor which regulates the speed of the fan and an air extraction charnel which communicates with the condenser. Furthermore, the present invention includes an electronic control device that controls the inlet air volume of the condenser and the pump's running. Said control method is to extract condensed water by regulating the inlet air volume of the condenser, without man's extra work. The present invention not only solves the problem of extracting condensed water, but also improves the heat change efficiency of the condenser by the condensed water shower circulation system.

Description

 Control method for draining condensed water of mobile air conditioner TECHNICAL FIELD

 The present invention relates to an air conditioner, and more particularly to a mobile air conditioner capable of draining condensed water without manual drainage.

 The invention also relates to a control method for removing condensed water from the mobile air conditioner.

 Background technique

 When the mobile air conditioner is in cooling operation, if the surface temperature of the evaporator is lower than the indoor dew point temperature, condensate will be generated on the evaporator. At present, the condensed water removal of mobile air conditioners on the market mainly adopts the following two methods: One is to directly use a water tank to collect the condensed water generated by the mobile air conditioner. Due to the limited volume of the water tank, it is often necessary to manually drain the water when it is full to work normally. The typical full time of water in condensation conditions is 1 to 2 hours, which is extremely inconvenient to use at night. The other is to install a condensed water treatment device, so that the condensed water generated by the evaporator flows through the condenser through the spraying device and then enters the water tank, and the condensed water in the water tank can be pumped to the spraying device to circulate and spray through the water pump. Part of the condensate is evaporated on the condenser and discharged to the outside with the exhaust pipe. This solution prolongs the full time of the water tank, but the condensate discharge speed is lower than the generation speed under the dew condition. In the end, the water tank full problem will still need to be treated by manual drainage. The typical full time is

2-4 hours.

 Summary of the invention

 An object of the present invention is to provide a mobile air conditioner capable of removing condensed water without manually draining water by adjusting the air volume of the condenser. It changes the circulating air volume of the air conditioner condenser to adjust the condensing temperature according to the amount of water stored in the water tank, and then controls the discharge speed of the condensate, so that the water tank will not be full, and no manual drainage is required.

 Another object of the present invention is to provide a control method for draining condensed water in the mobile air conditioner.

 The mobile air conditioner of the present invention is mainly composed of a refrigeration system, a spray system and a fan system, wherein the refrigeration system is composed of a compressor, an evaporator, a throttling component and a condenser in order. The spray system includes a water tank, and the water in the water tank The water pump pumped to the condenser and the water level control device for controlling the operation of the water pump. The fan system includes a fan, a motor that regulates the speed of the fan, and an exhaust pipe connected to the condenser. The invention also provides electric power for controlling the amount of air entering the condenser and the operation of the water pump.控 装置。 Control device.

When the condensed water generated by the evaporator flows onto the condenser, the heat exchange efficiency of the condenser is enhanced. Due to the high compressor discharge temperature and condenser condensation temperature, part of the condensate is evaporated It is then discharged to the outside by the exhaust pipe, and the non-evaporated condensed water flows down to the water tank.

 The control method for removing condensed water in the mobile air conditioner of the present invention includes

 Once the water level of the water tank reaches the set spray ice level, the water level controller starts the water pump to send the water in the water tank to the condenser for circulation.

 As soon as the water level of the water tank reaches the set drainage level, or the water level continues to be higher than the spray water level for the set time, the water level controller sends a signal to the electronic control system, and the system enters the forced drainage mode operation. That is, the electric control device starts a water pump to perform a spray cycle, and reduces the amount of air entering the condenser to increase the condensation temperature of the refrigeration system, thereby increasing the evaporation and discharge speed of the condensed water.

 Typically, the air intake volume of the condenser in the forced exhaust mode is 40% ~ 80% of the air intake volume during normal operation, and the condensing temperature is 5-20% higher than during normal operation. (:.

 Generally, the condensation temperature rise is too small to allow the condensate to reach a sufficient discharge speed. If the condensation temperature rises too much, it may easily lead to system overload protection and failure of plastic parts. When the discharge speed of the condensate water is faster than the generation speed, the condensate water is continuously evaporated and discharged to the outside through the exhaust pipe, and the water level of the water tank gradually decreases. When the water tank level is lower than the set spray water level, the system turns to normal operation. Therefore, the water tank of the present invention will not be full, and no manual drainage is required.

 When the condenser and the evaporator use a fan and a motor, and an air outlet valve controlled by an electric control device is provided at the condenser air inlet and the evaporator air inlet, the indoor air is drawn into the mobile air conditioner. Divided into two channels, one enters the evaporator air duct and the evaporator heat exchanges and then discharges into the indoor refrigeration, the other enters the condenser air duct and the condenser heat exchanges and discharges the outdoor through the exhaust pipe. According to the above-mentioned method for removing condensed water, the electronic control system controls the opening degree of the exhaust valve to reduce the amount of air introduced into the condenser and increase the amount of air introduced into the evaporator, thereby controlling the discharge rate of the condensed water. When the mobile air conditioner uses a two-axis motor to drive two mutually independent condenser fans and evaporator fans, the condenser and evaporator air duct systems are also independent of each other, and the electric control system also controls the exhaust valve by To reduce the amount of air introduced into the condenser and increase the amount of air introduced into the evaporator, so as to control the discharge rate of the condensed water.

 When the condenser and the evaporator are respectively provided with an independent fan motor, the rotation speed of the condenser fan motor is controlled by an electric control device. According to the above-mentioned method for removing condensed water, the electric control device reduces the rotation speed of the condensation fan motor. To increase the condensing temperature, the condensate drainage rate can be controlled. Typically, the speed of the condenser fan motor in the forced exhaust mode is 40 ~ 80% of the motor speed during normal operation.

The condenser is arranged below the evaporator, and the condensed water generated by the evaporator flows from the top to the condenser, which can enhance the heat exchange efficiency of the condenser. A spray box is arranged between the condenser and the evaporator. After the condensed water generated by the evaporator flows into the spray box, the water flow is evenly distributed through the spray box, and then flows down to the condenser. When the water pump starts to spray, the water in the water tank is also pumped into the spray box to make the water ¾ evenly distributed, and then flow down to the condenser.

 Positive effects of the invention:

 1. By controlling the discharge speed of condensed water, the mobile air conditioner will no longer be full of water, which completely solves the problem of artificial drainage.

 2. The condensate spraying circulation system can enhance the heat exchange efficiency of the condenser and reduce the operating power of the mobile air conditioner.

 BRIEF DESCRIPTION OF THE DRAWINGS

 FIG. 1 is a schematic structural diagram of Embodiment 1;

 2 to 3 are schematic structural diagrams of a condensate drainage system of the present invention;

 FIG. 4 is a control block diagram of the first embodiment.

 FIG. 5 is a schematic structural view of the second embodiment.

 Fig. 6 is a control block diagram of the second embodiment.

 detailed description

Example 1

 As shown in FIG. 1, the present invention is a dual-air duct mobile air conditioner that can be moved by casters 113. The condenser 105 and the evaporator 111 of the mobile air conditioner each use an independent motor that is controlled by an electric control device 112 . Among them, the compressor 104, the condenser 105, the throttling part 103, and the evaporator 111 are connected in sequence to form a refrigeration cycle system of a mobile air conditioner, which provides cooling capacity for the system. The electronic control device 112 is an electrical system that effectively controls the safe, efficient, and economical operation of the mobile air conditioner. The spray box 109, the middle partition plate 110, the water tank 102, the water pump 101 that pumps the water in the water tank 102 to the condenser, the water level control device 114 that controls the operation of the pump, and the drain pipe 108 constitute a condensed water spray system.

 The mobile air conditioner draws outdoor air into the condenser 105 through an air inlet pipe 116, and then exhausts the air through an air outlet pipe 115. As shown in Figs. 2 to 3, the condensed water generated by the evaporator 111 flows from the middle partition 110 into the shower box 109 from top to bottom, and is poured onto the condenser 105 for one evaporation. The evaporated condensed water follows the condenser The air from 105 is discharged from the exhaust pipe 115 to the outside, and the non-evaporated condensed water flows down from the condenser and enters the water tank 102.

According to the control scheme shown in FIG. 4, when the water level of the water tank 102 reaches the set spray water level, the water level control device 114 starts the water pump device 101 to drain the condensed water in the water tank 102 from the drainage The pipe 108 is pumped into the shower box 109 and is circulated on the condenser 105 to evaporate cyclically, and is also discharged from the exhaust pipe 115 to the outside along with the outlet air of the condenser 105. After the water level in the water tank 102 is continuously higher than the set spray water level for a certain period of time (for example, 10 to 20 minutes), the system enters the forced discharge mode operation. The electronic control system 112 starts the water pump device 101 for cyclic spraying, and reduces the rotation speed of the motor 107 to about 60% during normal operation, thereby increasing the condensation temperature of the condenser 105 by about 10%. C, thereby increasing the rate of evaporation and discharge of condensate. The water level of the water tank 102 gradually drops. When the water level is lower than the set spray water level, the system exits the forced exhaust mode and enters the normal operation mode, and the motor 107 returns to the normal speed.

Example 2:

 As shown in FIG. 5, the compressor 202, the condenser 208, the throttling part 201, and the evaporator 214 constitute a refrigeration cycle system of the portable air conditioner, and provide cooling capacity for the system. The electronic control system 206 is an electrical system that effectively controls the safe, efficient, and economical operation of the mobile air conditioner.

 The condenser 208 and the evaporator 214 of the movable air conditioner share a motor and a fan 207. After the indoor air is sucked into the mobile air conditioner, it is distributed by the exhaust valve 209 and then enters the evaporator air separated by the partition 217. Channel 212 and condenser air duct 210, one of which enters evaporator air duct 212 and evaporator 214 for heat exchange and is sent to indoor refrigeration through air outlet 215, and the other enters condenser air duct 210 and condenser 208 for heat exchange by air. The pipe 213 is discharged outdoors.

 The spray box 211, the water tank 216, the water pump device 203, the drain pipe 205, the water level control device 204, and the water receiving tray 217 form a condensed water spray system. The condensate water produced by the evaporator 214 is evaporated from the top to the condenser 208 for one evaporation. The evaporated condensate is discharged from the exhaust pipe 213 with the air from the condenser 208 and the non-evaporated condensate is discharged from the condenser. It flows down and is collected by the water receiving tray 217 and enters the water tank 216.

 According to the control scheme shown in FIG. 6, when the water level in the water tank 216 reaches the set spray water level, the water level control device 204 starts the water pump device 203 to pump the condensed water 4 in the water tank 216 from the drain pipe 205 to the spray box. After being circulated inside the condenser 208 and evaporated cyclically, it is also discharged from the exhaust pipe 213 with the air from the condenser 208.

When the water level of the water tank 216 reaches the set drainage water level, the water level control device 204 sends a signal to the electric control system 206 and enters the forced drainage mode operation. The electronic control system 206 starts the water pump device 203 for cyclic spraying, and controls the opening of the exhaust valve 209 to reduce the amount of air introduced into the condenser and increase the amount of air introduced into the evaporator. The air intake to the condenser is reduced to normal operation. It is about 60% of the time, thereby increasing the condensing temperature of the condenser 20 ⁸ by 10. C, thereby improving the evaporation of condensate Development and discharge speed. After the water level of the water tank 216 gradually drops to the normal water level, the water level control device 204 sends a signal to the electric control system 206, exits the forced discharge mode and enters the normal operation mode. The water level of the water tank 216 gradually decreases. When the water level is lower than the set spray water level, the system exits the forced exhaust mode and enters the normal operation mode, and the exhaust valve 209 returns to the normal opening degree.

Claims

Rights request 1. A mobile air conditioner including a refrigeration system, a spray system, and a fan system. The refrigeration system is composed of a compressor, an evaporator, a throttling component, and a condenser. The spray system includes a water tank. The water pump pumps water to the condenser and the ice level control device that controls the operation of the water pump. The fan system includes a fan, a fan motor, and an exhaust pipe connected to the condenser. Electrical control device.  2. The mobile air conditioner according to claim 1, wherein the fan and the evaporator share a fan motor, and an electric control device is provided at the air inlet of the condenser air duct and the air inlet of the evaporator air duct. An extraordinary valve that controls the size of the opening.  3. The mobile air conditioner according to claim 1, characterized in that the cooler and the evaporator are respectively provided with a fan motor independent from each other, and the lane of the condenser fan motor is controlled by an electric control device.  4. The mobile air conditioner according to claim 1 or 2 or 3, characterized in that the f condenser is arranged below the evaporator.  5. The mobile air conditioner according to claim 4, wherein a spray box is provided between the condenser and the evaporator.  6. The control method for removing condensed water from a mobile air conditioner according to claim 1, comprising: Once the water level of the water tank reaches the set spray water level, the water level controller starts the water pump to pump the water in the tank to the condenser for circulation; Once the water tank water level reaches the set drainage water level, or the water level continues to be higher than the spray water level for a set time, the water level controller returns a signal to the electronic control system, the system enters the strong drainage mode, and the electronic control device starts the water pump to spray Leaching cycle, reduce the inlet air volume of the condenser to make the condensate evaporate and discharge.  7. The controller for removing condensate from a mobile air conditioner according to claim 6, characterized in that, in the forced exhaust mode, the air intake volume of the cold air conditioner is 40% to 80% of the air intake volume during normal operation, condensing The temperature is 5 to 20 ° C higher than during normal operation.